Shuttle-actuating mechanism for sewing-machines



(No Model.)

- Y y W. A. MACK.

' SHUTTLE AGTUATING MEGHANISM FOR SEWING MACHINES. No. 447,253. Patented Feb. 24, 1891.

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' UN TED STATES PATENT OFFICE.

YVILLIAM A. MACK, OF N O Rl/VALK, OHIO, ASSIGNOR TO THE STANDARD SEIVING MACHINE COMPANY, OF OHIO.

SHUTTLE-ACTUATING MECHANISM FOR SEWING-MACHINES.

PECIFICATION forming part of Letters Patent No. 447,253, dated February 24;, 1891. Application filed November 14, 1888. Serial No. 290,856 (No model.)

To all whom it may concern.-

Be it known that I, WILLIAM A. MACK, a citizenof the United States, residing in the city of Norwalk, in the county of Huron and State of Ohio, have in vent-ed certain new and useful Improvements in Sewing-Machines of the Rotary-Shuttle Class, of which the fol-' lowing, taken in connection with the drawings, is a specification.

My invention relates to improvements in sewing-machines of the rotary-shuttle class; and it consists in the construction and arrangement of the means for operating or rotating the shuttle in a manner as will hereinafter be set forthin detail, and pointed out in the claims.

Referring to the drawings, Figure 1 represents a bottom view of a machine showing my improvements thereon. Fig. 2 is a sectional view through the center of the bed and upright arm of a machine. Fig. 3 is an enlarged sectional view through the center of the driving-shaft, cam, shuttle-driver, and shuttle-race. Fig. 4 is a front or face view of the shuttle and raceway.

A represents the bed-plate of a sewing-inachine, and B the driving-shaft.

O is a hangerlocated on the underside of the bed-plate, provided with an opening through which one end of the driving-shaft passes and is supported thereby. Said hanger is also provided with an extension 0, extending hori-' zontally therefrom, as more clearly shown in Figs. 2 and 3, on which a sleeve D, having a cam-surface on that side adjacent to the shuttle, is located and adj ustably secured in a stationary position thereon by a set-screw (Z.

E is a shuttle-driver pivotally secured at its center on the driving-shaft B, and is provided with two arms or pins 6 e, pivotally secured at each end of the same. Said shuttledriver is rotated by the driving-shaft B, and is given a reciprocatory movement by reason of the contact, in this instance, of the said pins or arms ee back of their pivotal point of connection with said driver E with the'cam face or surface of the sleeve D. This reciproca-* tory movement of the shuttle-driver causes the ends of the said arms or pins 2 e to'alternately enter and withdraw from openings 6 e, Withwhich the shuttle G is provided, and

rotate the said shuttle.

the reception of the same.

F is the shuttle-race frame, circular in form, and provided with an interior raceway, within which the said shuttle G is held and rotated.

H is a circular plate secured in a fixed position at the end of the driving-shaft B, acting as an intermediary support and guide between the shuttle-driver and shuttle for the said pins or arms a e, which pass through openings in the same.

The operation of my improved deviceis as follows: The shuttle is first inserted into position at the front of the shuttle-frame, and the ends of the pins or arms e'e entered within the openings in said shuttle adapted for The bobbin is then inserted within the shuttle. The machine being put in motion,the shuttle passes through the loop in the thread and the pins or arms 6 e alternately withdraw at the proper moment when the thread nears the same to allow it to pass without obstruction by means of the contact of said shuttle-driver with the cam face or surface of the plate D.

Having thus set forth my invention, what I claim as new, and desire to secure by Letters Patent of the United States, is

1. In a sewing-machine, the combination, with the shuttle-race, of a shuttle provided with openings or recesses therein, a drivingshaft, a shuttle-driver pivotally mounted on said shaft and provided with pivoted arms, a guide-plate for said pivoted arms, and a cam adapted to operate said shuttle-driver and 'arms, substantially as described, and for the purpose set forth. v

2. In a sewing-machine, the combination, with a shuttle-race, of a shuttle provided with openings therein, a driving-shaft anda shuttle-driver pivotally mounted on the said driving-shaft and provided with pivoted arms, a guide-plate located between said driver and shuttle-race, and a stationary carn surrounding the driving-shaft, substantially as described, and for the purpose set forth.

VIo'roR GUTZWILER, Jr., J. MILLER, Jr. 

